Sound Guy, I am certainly not disagreeing with you. I do believe that a properly set up trailer hooked to a properly mated tow vehicle can tow safely. All the additional comments you made about proper weights also apply.
My personal issue is that, I had to buy a hitch. I "felt" like my first set up would work just fine but I wasn't completely sure. I did know that my trailer's hitch weight was going to sag the end of my 4Runner so I purchased a WD hitch. But, just to be safe I got one with built in sway control. My Equalizer has worked well for me with three different setups. Each time I changed either the trailer or the TV, I had to readjust the WD part and never really had to worry about the sway part.
That said, for your situation I do think you are on the right track. The OP will probably be fine too but it might do him well to get the weight measurements you have done.